CVE-2024-3273:A remote, unauthenticated command-injection vulnerability exists in the HTTP GET Request Handler nas_sharing.cgi of D-Link DNS-320L, DNS-325, DNS-327L, and DNS-340L devices, allowing arbitrary commands to be executed by manipulating the system argument (CWE-77); the flaw is rated high severity with a CVSS base score of 7.3 and affects firmware version 20240403 on the listed models.

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The vulnerability stems from an insecure implementation in the nas_sharing.cgi HTTP GET handler (with an unknown function) that enables manipulation of the system argument to inject and execute arbitrary commands. This allows remote attackers to run commands on affected devices without authentication. The issue affects D-Link DNS-320L, DNS-325, DNS-327L, and DNS-340L devices with firmware version 20240403 and is classified as CWE-77 (Command Injection). Disclosure indicates the vulnerability can be exploited remotely and that public exploitation may exist. The affected devices are reported to be end-of-life, with no active vendor support or patches available, emphasizing the importance of retirement or replacement. The CVSS scores across versions (3.0/3.1) are 7.3 (HIGH), with potential impacts to confidentiality, integrity, and availability.

Overview

This CVE describes a critical remote command-injection vulnerability in the D-Link NAS devices DNS-320L, DNS-325, DNS-327L, and DNS-340L, located in the nas_sharing.cgi component's HTTP GET request handler. By manipulating the system argument, an attacker can inject and execute commands on the device without authentication, potentially compromising the device and related network resources. The flaw is associated with CWE-77 (Command Injection) and has a CVSS base score of 7.3 (HIGH) for both CVSS v3.0 and v3.1. The advisory notes that the affected firmware is 20240403 and that the products are end-of-life with no available patch from the vendor, increasing the risk profile. Public disclosure and available exploit information further elevate the urgency of mitigation, though remediation options are limited by the vendor’s discontinued support.

Remediation

  • No vendor patch is available; these products are end-of-life. Primary remediation is to retire the affected devices and replace them with supported, security-patched hardware.
  • If replacement is not immediately possible, apply network-side mitigations:
    • Disable or tightly restrict remote management and HTTP access from untrusted networks; block access to the NAS web interface from the internet.
    • Place the devices behind a firewall or VPN and segment them from critical networks; limit exposure to only trusted internal networks.
    • Enforce strict access controls, monitor and log all administrative activity, and consider disabling unnecessary services on the device.
  • Stay informed with vendor advisories and public risk notices and plan for timely migration to supported platforms when feasible.

References

Early Warning

Customers using Armis Early Warning were notified about this vulnerability before it appeared in CISA's Known Exploited Vulnerabilities Catalog, enabling them to assess their exposure and act proactively. Armis offers these examples of CVEs already included in CISA KEV for potential customers. Click here to learn how to receive alerts earlier.

Armis Alert Date
Apr 9, 2024
CISA KEV Date
Apr 11, 2024
2days early

Industry ExposureMost to least
This section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.

  1. Accommodation & Food Services: Low
    Accommodation & Food Services
  2. Administrative, Support, Waste Management & Remediation Services: Low
    Administrative, Support, Waste Management & Remediation Services
  3. Agriculture, Forestry Fishing & Hunting: Low
    Agriculture, Forestry Fishing & Hunting
  4. Arts, Entertainment & Recreation: Low
    Arts, Entertainment & Recreation
  5. Construction: Low
    Construction
  6. Educational Services: Low
    Educational Services
  7. Finance and Insurance: Low
    Finance and Insurance
  8. Health Care & Social Assistance: Low
    Health Care & Social Assistance
  9. Information: Low
    Information
  10. Management of Companies & Enterprises: Low
    Management of Companies & Enterprises
  11. Manufacturing: Low
    Manufacturing
  12. Mining: Low
    Mining
  13. Other Services (except Public Administration): Low
    Other Services (except Public Administration)
  14. Professional, Scientific, & Technical Services: Low
    Professional, Scientific, & Technical Services
  15. Public Administration: Low
    Public Administration
  16. Real Estate Rental & Leasing: Low
    Real Estate Rental & Leasing
  17. Retail Trade: Low
    Retail Trade
  18. Transportation & Warehousing: Low
    Transportation & Warehousing
  19. Utilities: Low
    Utilities
  20. Wholesale Trade: Low
    Wholesale Trade

Focus on What Matters

  1. See Everything.
  2. Identify True Risk.
  3. Proactively Mitigate Threats.

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